RALEIGH, N.C., Aug. 1, 2001 – CP&L has installed a selective catalytic reduction (SCR) device for reducing nitrogen oxide (NOx) emissions at its coal-burning Roxboro Plant.
This is the first SCR installed on an electric generating plant in North Carolina. The SCR, along with recently installed low NOx burners, will minimize NOx emissions from Roxboro Unit 4 by more than 85 percent. Located in Person County, the Roxboro Plant is CP&L’s largest power plant, generating 2,477 megawatts of electricity – enough to power 1.8 million homes.
“We’ve worked closely with the state on this, and we’re very proud to be the first electric utility company in North Carolina to take this step,” said Mike Williams, CP&L’s senior vice president of power operations. “Technology like the SCR is a vital tool in our efforts to uphold our commitment to the environment.”
Reducing NOx emissions improves overall air quality by curtailing the formation of ground level ozone. Nitrogen oxides are a by-product of the combustion gases in boilers and gas turbines used to manufacture electricity. SCRs use ammonia to convert nitrogen oxides to nitrogen and water and mitigate emissions. The process involves injecting ammonia into the post-combustion flue gas and uses a catalyst to break down NOx into elemental nitrogen and water.
New federal regulations, along with North Carolina’s State Implementation Plan (SIP), require additional NOx reductions to curb interstate ozone transport. To comply with these rules, in North Carolina CP&L will reduce its ozone season NOx emissions from coal-fired plants from 29,000 tons in 2000 to 11,300 tons in 2006. Systemwide, CP&L expects to spend $370 million installing NOx reduction technologies, in addition to $176 million in previous investments made since 1995 to reduce emissions at the company’s coal plants.
In addition to being the first utility company to use the SCR device in North Carolina, CP&L has been a leader in using technology to limit emissions and improve air quality. CP&L was:
* First in the Southeast to install a unique combination of lean gas reburn and selective non-catalytic reduction (SNCR) technology
* First in the country to test a combustion control NOx technology developed in Europe (known as WIR)
* First in the world to install a Swedish combustion control technology (known as ROFA) on a coal-fired boiler.
The lean gas reburn/SNCR technology installed at the Asheville Plant in 2000 breaks down NOx into elemental nitrogen and water through the injection of natural gas and urea. The WIR technology, which provides for more complete burning of coal, was placed into service at CP&L’s Weatherspoon Plant in 1998 and Lee Plant in 1999. The ROFA technology, which uses high velocity overfire air to reduce NOx emissions, was installed on one unit at CP&L’s Cape Fear Plant in 2000 and is currently being installed on the other unit.
CP&L plans to install SCRs on two other units at Roxboro – Units 1 and 3 – and at the company’s Mayo Plant, also located in Person County.
CP&L, a subsidiary of Progress Energy (NYSE: PGN), provides electricity and related services to more than 1.2 million customers in North Carolina and South Carolina. The company is headquartered in Raleigh, N.C., and serves a territory encompassing over 33,000 miles including the cities of Raleigh, Wilmington, Fayetteville, and Asheville in North Carolina and Florence and Sumter in South Carolina. For more information about CP&L, visit the company’s Web site at: http://www.cpl.com.